156992994 has 48 divisors (see below), whose sum is σ = 362849760. Its totient is φ = 48885120.

The previous prime is 156992981. The next prime is 156993013. The reversal of 156992994 is 499299651.

156992994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 156992994.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40689 + ... + 44379.

It is an arithmetic number, because the mean of its divisors is an integer number (7559370).

Almost surely, 2^156992994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156992994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181424880).

156992994 is an abundant number, since it is smaller than the sum of its proper divisors (205856766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

156992994 is a wasteful number, since it uses less digits than its factorization.

156992994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3855 (or 3852 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 54.

The square root of 156992994 is about 12529.6845131871. The cubic root of 156992994 is about 539.4610466323.

The spelling of 156992994 in words is "one hundred fifty-six million, nine hundred ninety-two thousand, nine hundred ninety-four".